Answer:
Explanation:
= Vacuum permeability =
= Radius of loop = 15 cm
= Current in loop = 11 A
= Radius of coil = 0.76 cm
N = Number of turns of coil = 66
= Current in coil = 1.9 A
Magnetic field is given by
Magnitude of magnetic field produced by the loop at its center is .
Torque is given by
Magnitude of torque on the coil due to the loop is
Answer:
The wavelength of the electron is
Explanation:
Given that,
Temperature = 300 K
We know that,
The energy of free electron is
Where, k = wave number
The momentum of the electron is
Th effective mass is
We need to calculate the wavelength of the electron
Using formula of wave number
Put the value of k
We know that,
Thermal energy of electron
The de Broglie wavelength of the electron is
Put the value into the formula
Hence, The wavelength of the electron is
A. Controlled experiment hope this helps